/*
 * Copyright (c) 2019.  鼎捷软件股份有限公司.All rights reserved.
 */

package com.digiwin.dap.middleware.context;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * *
 * 2018/11/1
 */
@Component
public class SpringApplicationContext implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringApplicationContext.applicationContext == null) {
            SpringApplicationContext.applicationContext = applicationContext;
        }
    }

    /**
     * 获取applicationContext
     *
     * @return 服务容器
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }


    /**
     * 通过name获取 Bean.
     *
     * @param name 名称
     * @return Bean
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     *
     * @param clazz 类名
     * @param <T>   类型
     * @return Bean
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name  名称
     * @param clazz 类名
     * @param <T>   类型
     * @return Bean
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}
